io/spi: enforce the canonical import path
io/spi: enforce the canonical import path

Change-Id: I0ef3d81f8fcc2d16ab571d7692d9235208ec3867
Reviewed-on: https://go-review.googlesource.com/21236
Reviewed-by: Minux Ma <72d850dbd8858b791995463d8539b5a379577f28@golang.org>

AkihiroSuda/golang-exp-aspectgo,golang/exp,golang/exp,golang/exp,AkihiroSuda/golang-exp-aspectgo,AkihiroSuda/golang-exp-aspectgo